Critical Behavior and Macroscopic Phase Diagram of the Monoaxial Chiral Helimagnet Cr1/3NbS2

Abstract Cr1/3NbS2 is a unique example of a hexagonal chiral helimagnet with high crystalline anisotropy, and has generated growing interest for a possible magnetic field control of the incommensurate spin spiral. Here, we construct a comprehensive phase diagram based on detailed magnetization measu...

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Autores principales:	Eleanor M. Clements, Raja Das, Ling Li, Paula J. Lampen-Kelley, Manh-Huong Phan, Veerle Keppens, David Mandrus, Hariharan Srikanth
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/322b2e8c64a84e23be0c739f400701ce
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spelling	oai:doaj.org-article:322b2e8c64a84e23be0c739f400701ce2021-12-02T15:05:34ZCritical Behavior and Macroscopic Phase Diagram of the Monoaxial Chiral Helimagnet Cr1/3NbS210.1038/s41598-017-06728-52045-2322https://doaj.org/article/322b2e8c64a84e23be0c739f400701ce2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06728-5https://doaj.org/toc/2045-2322Abstract Cr1/3NbS2 is a unique example of a hexagonal chiral helimagnet with high crystalline anisotropy, and has generated growing interest for a possible magnetic field control of the incommensurate spin spiral. Here, we construct a comprehensive phase diagram based on detailed magnetization measurements of a high quality single crystal of Cr1/3NbS2 over three magnetic field regions. An analysis of the critical properties in the forced ferromagnetic region yields 3D Heisenberg exponents β = 0.3460 ± 0.040, γ = 1.344 ± 0.002, and T C = 130.78 K ± 0.044, which are consistent with the localized nature the of Cr3+ moments and suggest short-range ferromagnetic interactions. We exploit the temperature and magnetic field dependence of magnetic entropy change (ΔS M) to accurately map the nonlinear crossover to the chiral soliton lattice regime from the chiral helimagnetic phase. Our observations in the low field region are consistent with the existence of chiral ordering in a temperature range above the Curie temperature, T C < T < T*, where a first-order transition has been previously predicted. An analysis of the universal behavior of ΔS M(T,H) experimentally demonstrates for the first time the first-order nature of the onset of chiral ordering.Eleanor M. ClementsRaja DasLing LiPaula J. Lampen-KelleyManh-Huong PhanVeerle KeppensDavid MandrusHariharan SrikanthNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Eleanor M. Clements Raja Das Ling Li Paula J. Lampen-Kelley Manh-Huong Phan Veerle Keppens David Mandrus Hariharan Srikanth Critical Behavior and Macroscopic Phase Diagram of the Monoaxial Chiral Helimagnet Cr1/3NbS2
description	Abstract Cr1/3NbS2 is a unique example of a hexagonal chiral helimagnet with high crystalline anisotropy, and has generated growing interest for a possible magnetic field control of the incommensurate spin spiral. Here, we construct a comprehensive phase diagram based on detailed magnetization measurements of a high quality single crystal of Cr1/3NbS2 over three magnetic field regions. An analysis of the critical properties in the forced ferromagnetic region yields 3D Heisenberg exponents β = 0.3460 ± 0.040, γ = 1.344 ± 0.002, and T C = 130.78 K ± 0.044, which are consistent with the localized nature the of Cr3+ moments and suggest short-range ferromagnetic interactions. We exploit the temperature and magnetic field dependence of magnetic entropy change (ΔS M) to accurately map the nonlinear crossover to the chiral soliton lattice regime from the chiral helimagnetic phase. Our observations in the low field region are consistent with the existence of chiral ordering in a temperature range above the Curie temperature, T C < T < T*, where a first-order transition has been previously predicted. An analysis of the universal behavior of ΔS M(T,H) experimentally demonstrates for the first time the first-order nature of the onset of chiral ordering.
format	article
author	Eleanor M. Clements Raja Das Ling Li Paula J. Lampen-Kelley Manh-Huong Phan Veerle Keppens David Mandrus Hariharan Srikanth
author_facet	Eleanor M. Clements Raja Das Ling Li Paula J. Lampen-Kelley Manh-Huong Phan Veerle Keppens David Mandrus Hariharan Srikanth
author_sort	Eleanor M. Clements
title	Critical Behavior and Macroscopic Phase Diagram of the Monoaxial Chiral Helimagnet Cr1/3NbS2
title_short	Critical Behavior and Macroscopic Phase Diagram of the Monoaxial Chiral Helimagnet Cr1/3NbS2
title_full	Critical Behavior and Macroscopic Phase Diagram of the Monoaxial Chiral Helimagnet Cr1/3NbS2
title_fullStr	Critical Behavior and Macroscopic Phase Diagram of the Monoaxial Chiral Helimagnet Cr1/3NbS2
title_full_unstemmed	Critical Behavior and Macroscopic Phase Diagram of the Monoaxial Chiral Helimagnet Cr1/3NbS2
title_sort	critical behavior and macroscopic phase diagram of the monoaxial chiral helimagnet cr1/3nbs2
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/322b2e8c64a84e23be0c739f400701ce
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Critical Behavior and Macroscopic Phase Diagram of the Monoaxial Chiral Helimagnet Cr1/3NbS2

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